Lutetium - ASCII Periodic Table of the Elements

ASCII PERIODIC TABLE OF THE ELEMENTS

  Lu

Relative atomic mass: 174.967 ± 0.001

English: Lutetium
French: Lutétium
Croatian: Lutecij
German: Lutetium
Italian: Lutezio
Spanish: Lutecio

Atomic number: 71
Group numbers: 3
Period: 6
Standard state (20 °C): solid

Discovery: 1907 Georges Urbain (FR); Carl Freiherr Auer von Welsbach (AT)

Lutetium was discovered by Georges Urbain (FR) and independently by Carl Freiherr Auer von Welsbach (AT) in 1907. The origin of the name comes from the Greek word 'Lutetia' meaning 'Paris'. It is a silvery-white and relatively stable in air, rare earth metal. Lutetium is found with ytterbium in gadolinite and xenotime. Stable lutetium nuclides can be used as catalysts in cracking, alkylation, hydrogenation, and polymerization.

Electronic configuration: [Xe] 4f¹⁴ 5d¹ 6s²
Formal oxidation number: +3
Atomic radius: 171.8 pm

Electronegativities: 1
Thermal conductivity: 16.4 W/(m K)
Electrical resistivity (20 °C): 79 μΩcm

Melting point: 1663 °C
Boiling point: 3402 °C

Heat of fusion: 19.2 kJ/mol
Heat of vaporization: 428 kJ/mol
Heat of atomization: 427.37 kJ/mol